Fig. 15 in An early Cambrian fauna of skeletal fossils from the Emyaksin Formation, northern Siberia

Fig. 15. Mollusc Enigmaconus? pyramidalis sp. nov., holotype, internal moulds from lower Cambrian Emyaksin Formation, Bol'shaya Kuonamka River, Anabar Uplift, Siberia; SMNH Mo 167676, sample 7/70. A. Upper view. B. Close-up of A, scaly texture on internal mould. C. Lateral view. D. View on the pegma-like sub-apical structure. E. Close-up of C. F. View on the side opposite to D. Scale bar 300 μm, except B, E, 60 μm.